Re: error on ifconfig, bssid
one more question about the same thing. i got my access point i wish to use on a NWID that noone else uses. i specify this nwid using ifconfig on my clients. however, as soon as i get a better signal from another access point on a different NWID, my card switches, and my clients lose their connection. here's what it looks like: = $ ifconfig wi0 wi0: flags=8843UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST mtu 1500 lladdr 00:80:c6:e3:1c:ff description: dhcp groups: egress media: IEEE802.11 autoselect (DS11) status: active ieee80211: nwid linksys_9f 2dBm (auto) inet6 fe80::280:c6ff:fee3:1cff%wi0 prefixlen 64 scopeid 0x2 inet 192.168.1.75 netmask 0xff00 broadcast 192.168.1.255 $ wicontrol NIC serial number: [ 3841 ] Station name: [ WaveLAN/IEEE node ] SSID for IBSS creation: [ IBSS ] Current netname (SSID): [ greenmonster ] Desired netname (SSID): [ linksys_9f ] Current BSSID: [ 00:0c:41:68:70:f8 ] Channel list: [ 2047 ] IBSS channel: [ 1 ] Current channel:[ 4 ] Comms quality/signal/noise: [ 36 67 4 ] Promiscuous mode: [ Off ] Process 802.11b Frame: [ Off ] Port type (1=BSS, 3=ad-hoc, 6=Host AP): [ 1 ] MAC address:[ 00:80:c6:e3:1c:ff ] TX rate (selection):[ 3 ] TX rate (actual speed): [ 11 ] Maximum data length:[ 2304 ] RTS/CTS handshake threshold:[ 2347 ] Create IBSS:[ Off ] Antenna diversity (0=auto,1=pri,2=aux): [ ] Microwave oven robustness: [ On ] Roaming mode(1=firm,3=disable): [ 1 ] Access point density: [ 1 ] Power Management: [ Off ] Max sleep time: [ 100 ] Enhanced Security mode: [ ] Intersil Prism2-based card: [ 1 ] Card info: [ PRISM2 HWB3163 rev.B, Firmware 1.4.9 ] Encryption: [ Off ] Encryption algorithm: [ Firmware WEP ] Authentication type (1=OpenSys, 2=Shared Key): [ 1 ] TX encryption key: [ 1 ] Encryption keys:[ ][ ][ ][ ] $ sudo wicontrol -L AP Information ap[0]: netname (SSID): [ greenmonster ] BSSID: [ 00:0c:41:68:70:f8 ] Channel:[ 4 ] Beacon Interval:[ 100 ] Quality/Signal/Noise [signal]: [ 12 / 22 / 10 ] Capinfo:[ ESS PRIV ] DataRate [Mbps]:[ 11.0 ] AvailableRates [Mbps]: [ 1.0 5.5 11.0 11.0 ] ap[1]: netname (SSID): [ linksys_9f ] BSSID: [ 00:13:10:e8:9f:44 ] Channel:[ 6 ] Beacon Interval:[ 100 ] Quality/Signal/Noise [signal]: [ 11 / 21 / 10 ] Capinfo:[ ESS ] DataRate [Mbps]:[ 11.0 ] AvailableRates [Mbps]: [ 1.0 2.0 5.5 11.0 18.0 24.0 36.0 54.0 ] $ = notice the: Current netname (SSID): [ greenmonster ] Desired netname (SSID): [ linksys_9f ] but wicontrol -L proves that the other access point is still there. this just happens when greenmonster's signal is stronger than linksys_9f's. sorry, but this is so frustrating to me, i can tell ifconfig to use a certain nwid, channel, c; but as soon as it gets a better signal from another access point, it's game over. any help is _much_ appreciated. lucas reddinger
Re: error on ifconfig, bssid
On 1/28/06, Damien Miller [EMAIL PROTECTED] wrote: setting a preferred bssid doesn't solve this at all, it just means that your attacker has to set her bssid (trivial) before their spoof your peer. i guess you are right. use ipsec if you care about the traffic that does over such a link ipsec protects the traffic, but it doesn't mean that the link won't drop. is there any way to protect the actual radio link? lucas
Re: error on ifconfig, bssid
hi again, according to an off-list e-mail, wi(4) doesn't currently support setting the bssid and the man page lied to me. is this the case, or was the error a result of something else? Yes wi doesn't support the relevant ioctls for setting bssid at this time, man page in -current has been updated to reflect this. does wi(4) even support setting the channel? $ sudo ifconfig wi0 chan 6 ifconfig: SIOCS80211CHANNEL: Invalid argument the weird thing is that this seems to work: $ sudo wicontrol wi0 -f 6 but after i run it, the interface will still choose an AP on a different channel if the signal is stronger (both APs have the same nwid). so the question is: is wi(4) secure at all? if i choose to run openbsd for a point-to-point wifi connection, i choose a specific nwid and channel. but since i cannot select bssid nor even chan, the two nodes just connect to the best looking signal under the given nwid. so some wardriver comes along, sets his prism as hostap, sets his nwid the same as mine, and sticks his antenna directly in front of one of my node's antenna. the the point-to-point connection fails. so i guess the two options are: 1. use different hardware that uses a differnet driver (poor solution) 2. fix wi(4) can anyone comment on if it would be possible/hard to port features from net/free? thanks, lucas
Re: error on ifconfig, bssid
When you set the bssid, are you setting telling the card to connect to the AP with that bssid, or are you telling the card to use that bssid for itself when it's acting like an access point? i wanted to connect to the access point that has the specified bssid. i am using bss mode. i am not trying to do _anything_ with hostap. this card is a client. lucas reddinger
Re: error on ifconfig, bssid
* Do you really want a bssid, or are you just looking for a network ID (nwid)? in a previous e-mail to misc, i said: there are three access points that i can pick up that have the same ssid [nwid]. is there a way to specify the mac address [bssid] of the access point i wish to use? according to an off-list e-mail, wi(4) doesn't currently support setting the bssid and the man page lied to me. is this the case, or was the error a result of something else? * If you mean to set the bssid, are you sure your card is operating in BSS mode? yes. thanks, lucas reddinger
error on ifconfig, bssid
hi misc, the man page for ifconfig is very concise for bssid. why isn't this correct? $ sudo ifconfig wi0 bssid 00:13:10:e8:9f:44 ifconfig: SIOCS80211BSSID: Invalid argument $ thanks for your help. (more info follows) lucas -- $ uname -a OpenBSD release.wingedleopard.net 3.8 GENERIC#138 i386 $ ifconfig wi0 wi0: flags=8843UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST mtu 1500 lladdr 00:80:c6:e3:1c:ff description: wifi uplink groups: egress media: IEEE802.11 autoselect (DS11) status: active ieee80211: nwid linksys 2dBm (auto) inet6 fe80::280:c6ff:fee3:1cff%wi0 prefixlen 64 scopeid 0x2 inet 192.168.1.75 netmask 0xff00 broadcast 255.255.255.0 $ dmesg OpenBSD 3.8 (GENERIC) #138: Sat Sep 10 15:41:37 MDT 2005 [EMAIL PROTECTED]:/usr/src/sys/arch/i386/compile/GENERIC cpu0: Intel Pentium/MMX (GenuineIntel 586-class) 234 MHz cpu0: FPU,V86,DE,PSE,TSC,MSR,MCE,CX8,MMX cpu0: F00F bug workaround installed real mem = 100245504 (97896K) avail mem = 84328448 (82352K) using 1249 buffers containing 5115904 bytes (4996K) of memory mainbus0 (root) bios0 at mainbus0: AT/286+(63) BIOS, date 01/26/98, BIOS32 rev. 0 @ 0xfd850 apm0 at bios0: Power Management spec V1.2 apm0: AC on, battery charge unknown apm0: flags 30102 dobusy 0 doidle 1 pcibios0 at bios0: rev 2.1 @ 0xfd6a0/0x960 pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfdf60/128 (6 entries) pcibios0: no compatible PCI ICU found: ICU vendor 0x product 0x pcibios0: Warning, unable to fix up PCI interrupt routing pcibios0: PCI bus #0 is the last bus bios0: ROM list: 0xc/0x8000 cpu0 at mainbus0 pci0 at mainbus0 bus 0: configuration mode 1 (bios) pchb0 at pci0 dev 0 function 0 SIS 5597/5598 Host rev 0x02 pcib0 at pci0 dev 1 function 0 SIS 85C503 System rev 0x01 pciide0 at pci0 dev 1 function 1 SIS 5513 EIDE rev 0xd0: 5597/5598: DMA, channel 0 configured to compatibility, channel 1 configured to compatibility wd0 at pciide0 channel 0 drive 0: QUANTUM FIREBALL SE2.1A wd0: 16-sector PIO, LBA, 2014MB, 4124736 sectors wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2 atapiscsi0 at pciide0 channel 1 drive 0 scsibus0 at atapiscsi0: 2 targets cd0 at scsibus0 targ 0 lun 0: HITACHI, CDR-8335, 0008 SCSI0 5/cdrom removable cd0(pciide0:1:0): using PIO mode 4, DMA mode 2 ohci0 at pci0 dev 1 function 2 SIS 5597/5598 USB rev 0x10: irq 3, version 1.0, legacy support usb0 at ohci0: USB revision 1.0 uhub0 at usb0 uhub0: SIS OHCI root hub, rev 1.00/1.00, addr 1 uhub0: 2 ports with 2 removable, self powered dc0 at pci0 dev 6 function 0 ADMtek AN983 rev 0x11: irq 12, address 00:04:5a:70:cd:18 acphy0 at dc0 phy 1: AC_UNKNOWN 10/100 PHY, rev. 0 wi0 at pci0 dev 10 function 0 National Datacomm NCP130 Rev A2 rev 0x01: irq 9 wi0: PRISM2 HWB3163 rev.B (0x8003), Firmware 0.3.0 (primary), 1.4.9 (station), address 00:80:c6:e3:1c:ff vga1 at pci0 dev 13 function 0 S3 Trio64V2/DX rev 0x16 wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation) wsdisplay0: screen 1-5 added (80x25, vt100 emulation) isa0 at pcib0 isadma0 at isa0 pckbc0 at isa0 port 0x60/5 pckbd0 at pckbc0 (kbd slot) pckbc0: using irq 1 for kbd slot wskbd0 at pckbd0: console keyboard, using wsdisplay0 pcppi0 at isa0 port 0x61 midi0 at pcppi0: PC speaker spkr0 at pcppi0 sysbeep0 at pcppi0 lpt0 at isa0 port 0x378/4 irq 7 npx0 at isa0 port 0xf0/16: using exception 16 pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo fdc0 at isa0 port 0x3f0/6 irq 6 drq 2 fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec biomask ed6d netmask ff6d ttymask ffef pctr: 586-class performance counters and user-level cycle counter enabled dkcsum: wd0 matches BIOS drive 0x80 root on wd0a rootdev=0x0 rrootdev=0x300 rawdev=0x302 $
wicontrol: specify both ssid and bssid as a client
hi misc, there are three access points that i can pick up that have the same ssid. is there a way to specify the mac address of the access point i wish to use? i have only figured out how to specift the ssid (wicontrol -n), but then it's a toss up which access point i get. thanks much, lucas reddinger -- $ uname -a OpenBSD release.wingedleopard.net 3.8 GENERIC#138 i386 $ sudo wicontrol -L AP Information ap[0]: netname (SSID): [ linksys ] BSSID: [ 00:13:10:e8:9f:44 ] Channel:[ 6 ] Beacon Interval:[ 100 ] Quality/Signal/Noise [signal]: [ 24 / 31 / 7 ] Capinfo:[ ESS ] DataRate [Mbps]:[ 11.0 ] AvailableRates [Mbps]: [ 1.0 2.0 5.5 11.0 18.0 24.0 36.0 54.0 ] ap[1]: netname (SSID): [ linksys ] BSSID: [ 00:0f:66:a6:c6:63 ] Channel:[ 6 ] Beacon Interval:[ 100 ] Quality/Signal/Noise [signal]: [ 12 / 19 / 7 ] Capinfo:[ ESS ] DataRate [Mbps]:[ 11.0 ] AvailableRates [Mbps]: [ 1.0 2.0 5.5 11.0 18.0 24.0 36.0 54.0 ] ap[2]: netname (SSID): [ linksys ] BSSID: [ 00:0c:41:68:70:f8 ] Channel:[ 6 ] Beacon Interval:[ 100 ] Quality/Signal/Noise [signal]: [ 11 / 18 / 7 ] Capinfo:[ ESS ] DataRate [Mbps]:[ 11.0 ] AvailableRates [Mbps]: [ 1.0 5.5 11.0 11.0 ] $ ifconfig wi0 wi0: flags=8843UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST mtu 1500 lladdr 00:80:c6:e3:1c:ff groups: egress media: IEEE802.11 autoselect (DS11) status: active ieee80211: nwid linksys 1dBm (auto) inet6 fe80::280:c6ff:fee3:1cff%wi0 prefixlen 64 scopeid 0x2 inet 192.168.1.127 netmask 0xff00 broadcast 192.168.1.255 $ wicontrol NIC serial number: [ 3841 ] Station name: [ release ] SSID for IBSS creation: [ IBSS ] Current netname (SSID): [ linksys ] Desired netname (SSID): [ linksys ] Current BSSID: [ 00:13:10:e8:9f:44 ] Channel list: [ 2047 ] IBSS channel: [ 1 ] Current channel:[ 6 ] Comms quality/signal/noise: [ 44 87 6 ] Promiscuous mode: [ Off ] Process 802.11b Frame: [ Off ] Port type (1=BSS, 3=ad-hoc, 6=Host AP): [ 1 ] MAC address:[ 00:80:c6:e3:1c:ff ] TX rate (selection):[ 3 ] TX rate (actual speed): [ 11 ] Maximum data length:[ 2304 ] RTS/CTS handshake threshold:[ 2347 ] Create IBSS:[ Off ] Antenna diversity (0=auto,1=pri,2=aux): [ ] Microwave oven robustness: [ On ] Roaming mode(1=firm,3=disable): [ 1 ] Access point density: [ 1 ] Power Management: [ Off ] Max sleep time: [ 100 ] Enhanced Security mode: [ ] Intersil Prism2-based card: [ 1 ] Card info: [ PRISM2 HWB3163 rev.B, Firmware 1.4.9 ] Encryption: [ Off ] Encryption algorithm: [ Firmware WEP ] Authentication type (1=OpenSys, 2=Shared Key): [ 1 ] TX encryption key: [ 1 ] Encryption keys:[ ][ ][ ][ ] $ dmesg OpenBSD 3.8 (GENERIC) #138: Sat Sep 10 15:41:37 MDT 2005 [EMAIL PROTECTED]:/usr/src/sys/arch/i386/compile/GENERIC cpu0: Intel Pentium/MMX (GenuineIntel 586-class) 234 MHz cpu0: FPU,V86,DE,PSE,TSC,MSR,MCE,CX8,MMX cpu0: F00F bug workaround installed real mem = 100245504 (97896K) avail mem = 84328448 (82352K) using 1249 buffers containing 5115904 bytes (4996K) of memory mainbus0 (root) bios0 at mainbus0: AT/286+(63) BIOS, date 01/26/98, BIOS32 rev. 0 @ 0xfd850 apm0 at bios0: Power Management spec V1.2 apm0: AC on, battery charge unknown apm0: flags 30102 dobusy 0 doidle 1 pcibios0 at bios0: rev 2.1 @ 0xfd6a0/0x960 pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfdf60/128 (6 entries) pcibios0: no compatible PCI ICU found: ICU vendor 0x product 0x pcibios0: Warning, unable to fix up PCI interrupt routing pcibios0: PCI bus #0 is the last bus bios0: ROM list: 0xc/0x8000 cpu0 at mainbus0 pci0 at mainbus0 bus 0: configuration mode 1 (bios) pchb0 at pci0 dev 0 function 0 SIS 5597/5598 Host rev 0x02 pcib0 at pci0 dev 1 function 0 SIS 85C503 System rev 0x01 pciide0 at pci0 dev 1 function 1 SIS 5513 EIDE rev 0xd0: 5597/5598: DMA, channel 0 configured to compatibility
